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Q1. In a photoelectric effect experiment, 325 nm photons strike a cathode that has a work function equal to 1.25 eV. What is the greatest kinetic energy of the electrons removed from the cathode by this light?
Q2. An unmarked police car, travelling a constant 91, is passed by a speeder travelling 158. Precisely 1.40 after the speeder passes, the policeman steps on the accelerator.
If the police car's acceleration is 2.20, how much time elapses after the police car is passed until it overtakes the speeder (thought moving at constant speed)?
Q3. A 69.0 kg person throws a 0.0490 kg snowball forward with a ground speed of 34.0 m/s. A second person, with a mass of 59.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward with a speed of 2.20 m/s, and the second person is initially at rest. What are the velocities of the two people after the snowball is exchanged? Ignore the friction between the skates and the ice.
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